Final checks & user tipsChecking up the sub power supplyThe sub power supply is a device to prevent electric leakage due to the over current. Install the sub power supply separatelynear the ventilator and turn it off when you clean the ventilator or you do not use the ventilator for a long period of time.f Turn on the sub power supply which is installed separately.- The sub power supply is not supplied with the ventilator. Purchase thesub power supply individually.t If the circuit breaker (MCCB, ELB) is installed, the sub power supply does not need to be installed mandatorily.t Power supplies should only checked by qualified specialists.NOTERecommended Operation Conditionf For the installation and operating temperatures for the ventilator, refer to the table below. If the ventilator is operatedunder the condition other than are indicated, it may not operate due to the protective device in the ventilator. Especially,if outside temperature is under -15 °C, the ventilator does not operate at all.f Do not operate the ventilator when typhoon comes. Water may get in the room through the ventilator due to the rainand heavy winds.f Avoid operating the ventilator in indoor or outdoor with high temperature and humidity since dew may form on theinternal part of the product, including the heat exchanger. Especially avoid using it during the long rainy period in thesummer.Install condition Outdoor air condition Indoor air condition0~40 °C, 80 % RH below -15~50 °C, 80 % RH below 0~40 °C, 80 % RH belowENGLISH-18